The WOC WIDE 67 is an optical device with a timer function, allowing for precise operation. - Brand: WOC - Model: WOC WIDE 67 - Function: Timer A/B - Power Supply: AC Power - Operation Mode: AUTO - Type: Optical Device When looking through the lens, the image gradually moves away (becomes smaller) and closer (becomes larger) repeatedly, with a clicking sound. There are lenses on both the left and right sides, each showing a different image. Operation is very simple: ① Plug in the power cord. ② Turn the switch ON (move the Power lever up). ③ Turn the timer knob to the right for the desired number of minutes. ※ There is no need to move the other levers. Training is easy, requiring only 3-5 minutes of looking through the lens in the busy mornings, after returning home, or before bed. - Includes 6 instruction sheets - Operation confirmed (works perfectly) - Minor scratches from use, but no noticeable damage This is an expensive device from WAC Co., Ltd., the originator of vision training. Thank you for viewing. #VisionRecovery #Nearsightedness #EyeTraining #VisionRecoveryDevice #ElementarySchoolStudents #Pseudomyopia #GanyouSoken (Eye Education Research Institute)